package org.csmzxy.class2333;
import java.util.Scanner;
public class Example11 {
    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        int score=scanner.nextInt();
        String grade;
        switch (score/10){
            case 10:
            case 9:
                grade = "优秀";
                break;
            case 8:
                grade = "良好";
                break;
            case 7:
                grade = "中等";
                break;
            case 6:
                grade = "及格";
                break;
            default:
                grade="不及格";
        }
        System.out.println("你的等级是"+grade);
    }
}
